Minimum distance between two tetrahedral voids if a is the edge length of the cube is Options: (1) a/2 (2) a/4 (3) a/2√2 (4) √3a/4

Q. An element has a face-centred cubic (fcc) structure with a edge length of $a$. The distance between the centres of two nearest tetrahedral voids in the lattice is:

Q. The distance between an octahedral and tetrahedral void in bcc lattice will be
(1)sqr root 3 a
(2)sqr root 3a/2
(3)sqr root3a/3
(4)sqr root 3a/ 4

Q. Find the distance of tetrahedral void from the corner of a cube for a ccp crystal lattice.
Given:
The edge length of the unit cell is $20\sqrt{3}pm$

Q. The distance between any two tetrahedral voids formed on any body diagonal of a closest packed structure is $x\times a$, where a is the edge length of closest packed structure.
The value of $x$ is :